title: Nanoelectrospray ionization of protein mixtures: solution pH and protein pI.
mesh_terms: D000818:Animals; D002417:Cattle; D006863:Hydrogen-Ion Concentration; D007526:Isoelectric Point; D036103:Nanotechnology / Q000379:methods; D011506:Proteins / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D011506:Proteins